CVE-2025-62795: jumpserver Auth Bypass

Description

JumpServer is an open source bastion host and an operation and maintenance security audit system. Prior to v3.10.21-lts and v4.10.12-lts, a low-privileged authenticated user can invoke LDAP configuration tests and start LDAP synchronization by sending crafted messages to the /ws/ldap/ WebSocket endpoint, bypassing authorization checks and potentially exposing LDAP credentials or causing unintended sync operations. This vulnerability is fixed in v3.10.21-lts and v4.10.12-lts.

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CVSS v3.1 Score

7.1

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N

Weakness Type (CWE)

CWE-863 Incorrect Authorization

Affected Products

Vendor	Product	Versions
fit2cloud	jumpserver	< 3.10.21
fit2cloud	jumpserver	4.0.0 — 4.10.12

References

Advisories & Patches

https://github.com/jumpserver/jumpserver/security/advisories/GHSA-7893-256g-m822 https://github.com/jumpserver/jumpserver/security/advisories/GHSA-7893-256g-m822

Exploits

https://github.com/jumpserver/jumpserver/security/advisories/GHSA-7893-256g-m822 https://github.com/jumpserver/jumpserver/security/advisories/GHSA-7893-256g-m822

Frequently Asked Questions

What is CVE-2025-62795? +

JumpServer is an open source bastion host and an operation and maintenance security audit system. Prior to v3.10.21-lts and v4.10.12-lts, a low-privileged authenticated user can invoke LDAP configuration tests and start LDAP synchronization by sending crafted messages to the /ws/ldap/ WebSocket endpoint, bypassing authorization checks and potentially exposing LDAP credentials or causing unintended sync operations. This vulnerability is fixed in v3.10.21-lts and v4.10.12-lts. It has a CVSS v3.1 base score of 7.1 (HIGH).

How severe is CVE-2025-62795? +

CVE-2025-62795 has a CVSS v3.1 score of 7.1 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-62795? +

CVE-2025-62795 affects products from fit2cloud, specifically: jumpserver. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-62795? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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